/*
 * Package il.ac.biu.cs.grossmm.impl.activeData
 * File LinkedRootNode.java
 * 
 * This is a part of presence service framework prototype. 
 * See javadoc for more information.
 *  
 * Copyright (C) 2006 Grossmann Mark
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package il.ac.biu.cs.grossmm.impl.activeData;

import il.ac.biu.cs.grossmm.api.data.NodeType;
import il.ac.biu.cs.grossmm.api.flow.NodeInspector;
import il.ac.biu.cs.grossmm.api.keys.Key;

/**
 * List-based implementation of in-memory data root node.
 * 
 */
public class LinkedRootNode<N> extends LinkedNode<N> implements MemRootNode<N> {
	private final Key key;

	private SubscriptionImpl<N> subscription;

	private boolean isVisible;

	public LinkedRootNode(NodeType<N> nt, Key key) {
		super(nt);
		this.key = key;
	}

	@SuppressWarnings("unchecked")
	@Override
	public il.ac.biu.cs.grossmm.api.data.Root<N> getRoot() {
		return this;
	}

	public Key getKey() {
		return key;
	}

	public SubscriptionImpl<N> getSubscription() {
		return subscription;
	}

	public NodeInspector readLock() {
		// TODO Auto-generated method stub
		return MemInspector.INSTANCE;
	}

	public void readUnlock() {
		// TODO Auto-generated method stub

	}

	public void makeVisible() {
		isVisible = true;
	}

	boolean isVisible() {
		return isVisible;
	}

	public void setSubscription(SubscriptionImpl<N> subscription) {
		this.subscription = subscription;
	}
}
